<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Vue</title>
</head>
<body>
<div id="app">
    <input type="text" v-model="src1"><br><br>
    <img v-bind:src="src1" width="1000px">
</div>
<script src="vue.js"></script>
<script type="text/javascript">
    let vm = new Vue({
        el:"#app",
        data:{
            src1:"1.jpg",
            src2:"2.jpg",
            src3:"3.jpg"
        }
    });
</script>
</body>
</html>